<div dir="ltr"><div><div><div><div><div><div><div><div><div>Hi,<br></div>Good Day,<br><br></div> I want to ask about Task iring in AIPS. I want to make sure from input information.
My data have beam size 51.77" X 47.22" and task imhead give me <br><br>AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat<br>AIPS 1: RA---SIN 256 15 22 00.000 <b>129.00</b> -15.000 0.00<br>AIPS 1: DEC--SIN 256 05 04 00.000 <b>129.00</b> 15.000 0.00<br>AIPS 1: FREQ 1 1.4127871E+09 1.00 2.4414062E+04 0.00<br>AIPS 1: STOKES 1 1.0000000E+00 1.00 1.0000000E+00 0.00<br><b>Conv size</b>= 51.77 X 47.22 <b>Position angle</b>= -170.66<br><br></div><b>My questions are about x, y - coordinate center wrt rference point in pixels.</b>..Can I get it from task imhead (at pixel). I mean <b>129</b> or I have to suppose (0,129) for x and y as well<br><br></div><b>second question</b>, there are radius inner ring , radius outer ring and width of each ring. In this case, I have to consider inner one is 0 right?<br></div> outer one =51" According to beam size or what??<br></div> width of each ring =within beam size<br><br></div>Sorry for long questions, because I need to understand this task,<br><br><br></div>Best Regards,<br></div>Israa</div>